2017-06-07 (W) Pi0 Laser Tag PiTagErrUs

The print from yesterday was outfitted with the circuit board. Two of the fingers had to be removed to make space for the screw terminals. A hack saw blade was used between the teeth to clear printer slag.

 PCB mounted in holder

Large holes were cut in the pipe. These holes could, and should, have been planned but they were completely guessed. The goal was to simply clear as much space with large drill bits. After the holes were drilled, a hack saw blade was used to trim out some more plastic.

Rough hole cut in the pipe

The PCB fit through the rough hole while mounted on the holder. It was a perfect fit and the hole was covered at the ends and the USB socket was exposed. Unfortunately, it became obvious that the hole was not able to be covered with this design.

Exposed hole

The part was redesigned to be wide enough to cover the pipe hole but this meant that a hole had to be modeled for the USB cable which would attach to the Arduino mounted inside. A few measurements were taken but holding up the existing part to the screen for comparison really helped.

Computer model and existing print

The model kept the Raspberry Pi 0 mounting holes and fingers off to one side to make sure there would be room for the USB hole. The last two fingers used to hole the PCB were removed since they had to be cut away in the first version anyway. Distance between the fingers was increased.

Rotating model view of PCB holder

The model was printed and a hack saw blade was used between the fingers although it only took a moment since there was less printer slag. No further modifications were necessary after the model was printed. Alignment between the the USB socket and the hole was perfect.

 PCB mounted on new holder

The new holder covered the hole in the pipe pretty well. The exposed hole was my fault for getting overzealous with the drill. A problem might occur when plugging a USB cable into the Arduino which could push the PCB out of the holder. If the fingers are long enough, it will simply brace itself on the opposite wall. Glue could also be used to hold the PCB in place.

PCB holder in place covering hole


The rest of the posts for this project have been arranged by date

First time here?

Completed projects from year 1 
Completed projects from year 2
Completed projects from year 3

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2017-06-06 (Tu)